Combination condenser and resistance unit



E% 24, 1929.- 'E. B. NOWOSEELSKE 1,741,138

COMBINATION CONDENSER AND RESISTANCE UNIT Filed. Feb. 17, 1.925

IN l/E N TOR A TTORN Patented Dec. 24, 1929 UNITED STATES PATENT OFFICEEDWARD B. NOWOSIELSKI, or BLOOMFIELLD, new JERSEY, ASSIGNOR TO SPLITDOREELECTRICAL COMPANY, or NEWARK, new JERSEY COMBINATION CONDENSER ANDRESISTANCE UNIT Application filed February This invention relates to t acombination condenser and resistance unit, which is particularly adaptedfor use in connection with radio circuits.

In certain of these radio circuits, a condenser shunted by resistance isused in conunit.

Figure 2 is a plan view of Fig. 1, while Figure 3 is an end viewthereof.

In my application Serial No. 697,924 filed March 8, 1924, I havedisclosed one form of such a combination unit referred to, but mypresent application is intended to cover a modified construction fromthat shown in said application referred to.

The condenser per se is made up in a man ner similar to that describedin the application of Harry A. Hatch, filed October 16, 1920, Serial No.417,347, now Patent 1,574,- 424, issued February 23, 1926, and need notbe further referred to herein as my present invention is directed tocertain details with respect to the clamps themselves used for holdingthe condenser together and the manner of mounting the grid leak.

In the drawings, 1 is the body or condenser stack having clamps 2 and 3which embrace the ends of the stack as well as the protruding ends ofthe metal foil which bend over their respective ends underneath theclamps. The clamps may extend toward each other to any suitable distancein order to get sufficient clamping area to hold and bind the clampingplates to the stack toinsure that.

the condenser will retain its rated capacity. The clamps 2 and 3 areprevented from coming off by means of cars 4 which are pressed 17, 1925.Serial No. 9,783.

the lugs 5 and 6 are provided with one or more projections 8 to whichconnecting wires may 'be attached as by soldering. To the narrow portionor the back of the clamps 2 and 3 are fastened, as by means of'clips 9,which are punched outwardly from the material of the clamps themselves,a pair of resilient members 10 and 11 which extend longitudinally of theclamps and beyond the condenser stack. The members 10 and 11 areprovided each with an opening 12 for the reception of the terminals 13and 14 of the resistance member 15. The member 15 may be of any desiredform, but preferably of very high re sistance. It is to be understoodthat the spring members 10 and 11 may be attached to the clamps 2 and 3by any satisfactory means than that shown and described. This method ofmounting the condenser edgewise, rather than flatwise, as in myapplication previously referred to, has many advantages, one of which isa considerable saving in space, and the spring members being attachednear the mounting end of the clamps 2 and 3 as shown in the drawing,provides relatively long and flexible springs which is advantageous inmounting the grid leak or resistance unit. I preferably make the slotsor openings 12 in the members 10 and 11 wide enough so that the clamps 2and 3 on the condenser stack will pass freely therethrough in order thatthe springs may be even bent inwardly toward each other to an extentsuch that a grid leak, shorter than the length of the condenser, may beutilized, and since the springs are very long and flexible, grid leaksconsiderably longer than the condenser may be used; in other words, avery wide range of lengths of grid leaks may be accommodated by thistype of mounting.

Having thus described my invention what I claim is:

1. In a combination device of the class described, a condenser stackheld together by clamping members, auxiliary apparatus terminalsattached to the back of said clamping members and extendinglongitudinally of said clamping members and beyond the condenser stack.

2. In a combination device of the class described, a condenser stackheld together by clamping members flexible auxiliary apparatus terminalsattached to the back of said clamping members and extendinglongitudinally thereof and overlapping a considerable length of saidmembers and extending beyond the condenser stack.

8. In a combination device of the class described, a condenser stackheld together by clamping members, flexible auxiliary apparatusterminals attached to the back of said clamping members and extendinglon itudinally thereof and overlapping a considerable length of saidmembers and extending beyond the condenser stack, said terminals havingslots therein wider than the thickness of the condenser clamp and stackand in length such that the terminal may be positioned to take aresistance unit shorter or longer than the condenser per se.

4. In a combination device of the class described, a condenser stackheld together by clamping members, auxiliary apparatus springs attachedto the clamping members near one end thereof and extendinglongitudinally of said clamping members and beyond the condenser stack.

5. In a combination device of the class described, a condenser stackheld together by clamping members, auxiliary apparatus springs attachedto the clamping members near one end thereof and extendinglongitudinally of said clamping members and beyond the condenser stack,said springs having slots therein of such width and length that thesprings may be adjusted toward each other within the plane of thecondenser or they may be adjusted away from the con denser wherebyresistance units of considerable length variation may be mounted betweenthe springs.

6. In a combination device of the class described, a condenser stackheld together by clamping members, said clamping members having lugs atone end and having means for mounting the condenser cdgewise andauxiliary apparatus springs attached to the clamping member adjacentsaid lugs and extending in an opposite direction beyond the condenserstack.

7. In a combination device of the class described, a condenser stackheld together by clamping members, said clamping members having lugs atone end bent outwardly at right angles with holes therein whereby thecondenser can be mounted cdgewise, auxil-'

